Leviticus 23:34-44

34 `Speak unto the sons of Israel, saying, In the fifteenth day of this seventh month [is] a feast of booths seven days to Jehovah;
35 on the first day [is] a holy convocation, ye do no servile work,
36 seven days ye bring near a fire-offering to Jehovah, on the eighth day ye have a holy convocation, and ye have brought near a fire-offering to Jehovah; it [is] a restraint, ye do no servile work
37 `These [are] appointed seasons of Jehovah, which ye proclaim holy convocations, to bring near a fire-offering to Jehovah, a burnt-offering, and a present, a sacrifice, and libations, a thing of a day in its day,
38 apart from the sabbaths of Jehovah, and apart from your gifts, and apart from all your vows, and apart from all your willing-offerings, which ye give to Jehovah
39 `Only -- in the fifteenth day of the seventh month, in your gathering the increase of the land, ye do keep the feast of Jehovah seven days; on the first day [is] a sabbath, and on the eighth day a sabbath;
40 and ye have taken to yourselves on the first day the fruit of beautiful trees, branches of palms, and boughs of thick trees, and willows of a brook, and have rejoiced before Jehovah your God seven days.
41 `And ye have kept it a feast to Jehovah, seven days in a year -- a statute age-during to your generations; in the seventh month ye keep it a feast.
42 `In booths ye dwell seven days; all who are natives in Israel dwell in booths,
43 so that your generations do know that in booths I caused the sons of Israel to dwell; in my bringing them out of the land of Egypt; I, Jehovah, [am] your God.'
44 And Moses speaketh [concerning] the appointed seasons of Jehovah unto the sons of Israel.